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以矿渣粉为原料,研究了不同碱激发剂:单掺Ca(OH)_2、NaOH、Na_2CO_3、复掺NaOH+Na_2SiO_3、NaOH+CaSO_4·2H_2O、NaOH+Ca(OH)_2,对矿渣粉砂浆强度的影响。结果表明,单掺NaOH与复掺NaOH+CaSO_4·2H_2O作为碱激发剂时矿渣粉砂浆养护龄期28d的抗压强度较高;单掺Ca(OH)_2、复掺NaOH+Na_2SiO_3和NaOH+Ca(OH)_2作为碱激发剂时矿渣粉砂浆养护龄期28d的抗压强度居中;单掺Na_2CO_3作为碱激发剂时矿渣粉砂浆几乎没有强度。通过均匀正交试验研究了不同掺量下的粉煤灰、碱激发剂和烧粘土对矿渣粉砂浆强度的影响,制备出碱矿渣土体固化剂,在水灰比为0.45,矿渣粉砂浆养护龄期28d时,测出抗压强度达到37.1 MPa。
Using slag powder as raw material, the effects of different alkali activators such as Ca (OH) 2, NaOH, Na_2CO_3, complex NaOH + Na_2SiO_3, NaOH + CaSO_4 · 2H_2O and NaOH + Ca (OH) Impact. The results showed that the compressive strength of the slag powder mortar during the curing period of 28 d was higher than that of the mixed powder NaOH and CaSO 4 · 2H 2 O as the alkali activator. (OH) _2 as alkaline activator, the compressive strength of slag mortar during the curing period of 28 d was the highest. When Na_2CO_3 was used as the alkali activator, the slag mortar had almost no strength. The effect of fly ash, alkali activator and calcined clay on the strength of slag powder mortar were studied by uniform orthogonal test. The hardener of alkali slag soil was prepared. The water-cement ratio was 0.45, The age of 28d, the measured compressive strength reached 37.1 MPa.